Download algebra 3 - bishopa-ALG3

Warm Up
In some ancient cultures, colors were
considered very powerful; some
societies even believed that red
objects had ------- effect, restoring
good health through their color
alone.
(A) an enervating (B) a callow
(C) a salutary (D) an agile
(E) a peripheral
ALGEBRA 3
• Chapter 5
• Lesson 4
– Complex Numbers

DIRECTIONS (Absolute Values)
• Ignore the i
2
a b
2
I DO (Absolute Values)
Plot the Points
• 1. 2 - 3i
• 2. -3 + 2i
• 3. 4i
• 4. 5 - i
WE DO (Absolute Values)
Plot the Points
• 1. 4 - i
• 2. 3 + 2i
• 3. -3i
• 4. -4
YOU DO (Absolute Values)
Plot the Points
• 1. 4 + 2i
• 2. -2 - i
• 3. -1 + i
• 4. 1 + 5i
Directions (Solving Equations)
• Solve for x
– Use Inverse Operations
I DO (Solving Equations)
Solve the equations
• 1.
x  4
2
• 2. 2x 2  9  41
• 3. 8x 2  7  5x 2  4
• 4.
2
6x  5 120
WE DO (Solving Equations)
Solve the equations
2
1. x  11
2
5x
18  3
2.
3. 3x 2 1  7x 2
4.  1 x  3 2  7
 
8
YOU DO (Solving Equations)
Solve the equations
1.
2
3x  81
2. x 2  4 14
3.
2
x  2
 16
4. 9x  42 1 0
Review
• The past couple of days you learned how to
solve, plot, add, subtract, multiply, and find
the absolute value of a complex number.
Warm Up
Algebra 3
• Chapter 5
– Lesson 5
• Completing the Square
VOCAB
• Completing the Square – is a process that
allows you to write an expression of the form
𝑥 2 + 𝑏𝑥 as the square of a binomial
Directions
• Find c
–C=
𝑏 2
2